Quanta Mechanics Uncertainty Principle Isn't Necessary

The idea of a singularity inside a black hole is nonsensical when it comes to quanta mechanics. So the particles get so close that the quanta mechanics uncertainty principle prevents you from collapsing even further. But wouldn't thare be evidence or an argument against these dark stars? If they don't last very long, why do we think they could exist? Right? Well, they might not last that long in their own time, it but the gravity is really, really intense, and so time is slowed down.